Hair dryer



G. NAWROTH `uly 3l, 1962 HAIR DRYER Filed June 1'5. 1959 m T N E V m BYW ATTO@ EYS UnitedStates Patent O Filed June 15, 1959, Sel'. No. 820,4151 Claim. (Cl. 34-100) This invention relates -to hair dryers.k It is anobject of the present invention to provide a hair dryer which is quietin operation and has good drying capacity. The hair dryers, presently inuse, usually have the shape of a helmet closed at the top and open atthe bottom forming a drying chamber into which the upper head portion ofIa person using the helmet lits, the drying being accomplished byimeansof a stream of heated air blown with considerable velocity over thehair.

One of the objections to such a construction is the noise which iscreated by the vfan and air. Such noise is extremely objectionable tothe person having her hair dried not only because of the length of timesuch noise has to be endured by precludes the possibility ofconversation or gossip during that period. -Ilt must `also be borne inmind that, in hair `dressing establishments, it is usual for several ofsuch dryers to be operated at the same time which adds considerablyv tothe noise level.

It is therefore one of the objects of the present invention'to provide ahair dryer which is very quiet in operation andA thus removes theforegoing objection.

A further objection of the invention is to increase lthe eiciency of thedrying so that the same can be accomplished in a shorter period thanheretofore. g

These and other objects are accomplished by the apparatus described inthe following specification and illustrated in the accompanying drawingsin which:

FIGURE l is a cut away perspective view of a dryer exemplifying theinvention;

FIGURE 2 is a diagrammatic view to show the air circulation; and

FIGURE 3 is a fragmentary perspective view of the divider in the upperend of the helmet.

The hair dryer illustrated in the drawings comprises a dryer helmethaving an open bottom end and closed at the top end except for aplurality of air inlets 11 which are arranged in the top end and in theside Walls of the helmet adjacent the top; a perforate shell 12, havingan open bottom end, positioned within said helmet and forming a hairdrying chamber accessible through said open bottom end thereof intowhich the upper head portion of the person using the dryer helmet fits;the lower end of the shell 12 being bent outwardly to form an annularflange 13 which is secured to the inner wall of the helmet adjacent theopen end of the same; a partition 14 secured insidethe shell spacedbelow the top end thereof forming a fan chamber 15 in the upper portionof lthe shell and a divider 16 mounted in the upper end of the helmetbetween the top end thereof and the top end of the shell.

The flange 13 on the lower end of the shell -12 spaces the shell fromthe helmet to form an air heating chamber 17 in which is mounted anelectric heating coil 18.

The ange 13 is provided with a series of openings 19 through which aircirculates as hereinafter described. 'Ihe lower end of the helmet isformed with an annular yarcuate inturned flange Z0 for directing part ofthe air upwardly as hereinafter described. The partition 14 is Aformedwith a centrally provisioned port 21 and in alignment therewith theshell is formed with a port 22. in the upper end thereof.

The divider 16 co-operates with the top end of the helmet to form aninlet chamber 23. Formed centrally in the divider 16 is a centralopening 24 and along its outer edge is formed a series of ports 25.Slidably sup- 3,046,073 Patented July 31 1962 ICC ported on the `divider16 is |an annular plate 26 which is formed with -a series of ports 27and an operating handle 28 which projects through a slotted opening 29formed in the shell. The ports 27 are arranged so that-they can be movedinto and out of register with the ports 25 in the divider therebyproviding a means to regulate the amount of air owing into the airheating chamber 17.

The divider 16 serves as a support for an electric motor 30 having atriangular shaped mounting plate 31 which is fastened in any suitablemanner to the divider 16./

The motor 30 is provided with a long shaft 32 which extends downwardlyinto the fan chamber 15. Mounted on the shaft 32 within the air heatingchamber 17 is a low velocity fan 33 which is constructed so as to blowair downwardly through the chamber 17 and into the air drying chamberformed by the perforate shell 12,. Mounted on the shaft 32 within thefan chamber 15 is a fan 34 which is constructed'so yas to suck air fromthe drying chamber and force it into the air heating chamber forre-circulation.

In Aorder that the shell may be mounted on a suitable stand, it isprovided with a mounting breacket 35, which may be of the usualconstruction.

The dryer operates in the yfollowing manner. The person having his orher hair dried places the upper head portion in the hair drying chamber.The dryer is switched on which heatsl the heating coil 18 and starts thefan. Air is circulated downwardly, as indicated by the arrows, throughthe perforations in the shell into the hair drying chamber anddownwardly through the ports 19' to be deflected upwardly by thedellector 20. Of course, part of the `air will escape through the spacebetween the persons head and the shell into atmosphere so that a portionof fresh air is continually introduced into the helmet through theinlets 11. The air then travels upwardly being drawn into the fanchamber by ithe fan 34 out through the port 22 and back into the airheating chamber 17 to be re-circulated.

What I claim as new and desire to protect by Letters Patent of theUnited States is:

A hair dryer having-in combination a hair drying chamber having aperforate side wall and a` dome shaped top formed with 'an air outlet, acasing surrounding said drying chamber and spaced therefrom to form anair heating chamber between adjacent walls of the heating chamber andthe drying chamber, a partition in the upper portion of the casing, saidpartition having a central opening coaxial with said air outlet andvalvecontrol means havingpassages communicating with theY air heatingchamber, a ported baiile connecting the lower ends of the perforate sidewall to the inner wall of the air heating chamber, a centrally aperturedhorizontally disposed partition in the upper portion of said hair dryingchamber to provide a fan chamber-in the upper portion of the hair dryingchamber, a low velocity upwardly act- -ing suction fan mounted withinthe -fan chamber, ya rlow velocity downwardly acting blowing fan`mounted in the `r air heating chamber, an electric heater mounted inthe air heating chamber adjacent the yfan chamber, and a motor in thetop portion of said casing and yhaving a vertically and downwardlyextending drive shaft on which said `fans are coaxially mounted.

References Cited in the file of this patent

